28318167131 has 8 divisors (see below), whose sum is σ = 29823744720. Its totient is φ = 26814104352.

The previous prime is 28318167103. The next prime is 28318167149. The reversal of 28318167131 is 13176181382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28318167131 is a prime.

It is a super-2 number, since 2×28318167131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28318163131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340220 + ... + 415193.

It is an arithmetic number, because the mean of its divisors is an integer number (3727968090).

Almost surely, 2^28318167131 is an apocalyptic number.

28318167131 is a deficient number, since it is larger than the sum of its proper divisors (1505577589).

28318167131 is a wasteful number, since it uses less digits than its factorization.

28318167131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757405.

The product of its digits is 48384, while the sum is 41.

The spelling of 28318167131 in words is "twenty-eight billion, three hundred eighteen million, one hundred sixty-seven thousand, one hundred thirty-one".